[Healeys] Electric Draw

[David Nock BCS]

12.4 volts in only a half charged battery. You need to start off my putting 
on a slow charger until the battery is at a full charge of 12.7 volts.

To eliminate the alternator for the chance of a drain simply disconnect the 
alternator and then check for a drain.

My bet is that you have a faulty battery that is not holding its charge.



David Nock
British Car Specialists
209-948-8767
www.britishcarspecialists.com
-----Original Message----- 
From: R. Lindsay
Sent: Friday, June 07, 2019 5:47 AM
To: Healey List
Subject: [Healeys] Electric Draw

For the past few weeks I have been fighting a parasitic draw on my BJ8. It 
was running about .48 amps and would drain my battery in a day or so. I was 
told by a mechanic that a diode in my alternator must have blown therefore 
causing the draw. He also mentioned that my ground wires in the boot were 
loose which he tightened. I brought the car home, turned off the power in 
the boot and 2 days later the battery was dead.

So, here???s what I???ve done. I jumped the battery and started the car and ran 
it for 10 minutes. I disconnected the charger and tested the battery - 12.48 
volts. I then removed the cutoff switch and bolted the grounding wires 
together. I tested for a draw and got a zero reading. That was last night. I 
went out this morning (12 hours later) and the battery reads 12.33 volts.

My questions are 1. Is .15 volts a reasonable drop in voltage for a sitting 
car in 90 degree heat and 2. Can a diode in an alternator work sometimes and 
not at others. If it???s either ???good or bad??? all the time, I guess I need to 
presume the alternator is not the source of the draw. If a .15 volt loss 
over 12 hours is reasonable then removing the cut out switch in conjunction 
with presuming the alternator is good (as it works fine now) solved my 
problem.

What does the wisdom of this great resource think?

Price Lindsay

Cell: 630-841-6300
Email: 050.rpl at gmail.com

Sent from my iPhone
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